I try to pick up on everything VMs-related out there, and I liked comics as a kid (Marvel not DC, if you're askin'): so it came as a nice surprise to find the Voynich Manuscript popping up on the edges of the comics world.
According to this page on his own website, satirical graphics novel author Steve Aylett placed the VMs "in the Juice Museum" (a location in "The Velocity Gospel", #2 in his Accomplice series), as well as "in Eddie Gamete's library in Slaughtermatic". Sadly, thanks to H.G.Wells, David Bowie, Peter Frampton, Topper Headon, and Aleister Crowley, Steve's unlikely to ever make it into the list of Five Most Famous People From Bromley: but I'm sure he'll do OK for himself all the same. :-o
Another comics blogger has the VMs on the brain, mentioning it in a nice little article on the rediscovery of a full-length print of Fritz Lang's Metropolis (it mentions the funky Superman's Metropolis story, too), as well as in an article on its own.
But then again, I suppose the Codex Seraphinianus is very much like a graphic novel in its own odd way, and that's arguably not so very far from the VMs: if you can't read the text, all you have left is the pictures, right? John C commented that the Codex Seraphinianus "most closely resembles European fantasy works like those one sees from Roland Topor and various bande desinée artists": but to be honest, I'm pretty sure that Serafini was simply trying to appropriate (and undermine) the visual tropes of instruction manuals, rather than align himself with any art movement or style.
Finally (and apropos of nothing, I just thought you might like it), here - courtesy of yesbutnobutyes.com - is a classic Captain America frame, that got terribly, terribly lost in the translation to, erm, English. Enjoy!